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Finding the Fourth Proportional to 271,999.20, 407,998.80 and 85,029.60

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Solution

The fourth proportional to 271,999.20, 407,998.80 and 85,029.60 is: 127,544.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,999.20 : 407,998.80 = 85,029.60 : x
  2. Step 2: Convert to fraction form
    271,999.20/407,998.80 = 85,029.60/x
  3. Step 3: Cross multiply
    271,999.20x = 407,998.80 × 85,029.60
  4. Step 4: Simplify right side
    271,999.20x = 34,691,974,764.48
  5. Step 5: Solve for x
    x = 34,691,974,764.48/271,999.20
  6. Step 6: Final answer
    x = 127,544.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.